package com.business.task;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import java.util.Map;

import org.json.JSONObject;

import com.business.bean.baidu.BaiduAiAccountBean;

import net.sf.rose.jdbc.dao.BeanDAO;
import net.sf.rose.jdbc.query.BeanSQL;
import net.sf.rose.jdbc.service.Service;
import net.sf.rose.task.RoseTask;
import net.sf.rose.task.Task;
import net.sf.rose.util.RoseRuntimeException;

/**
 * 
 */
@Task("百度自动更新Token服务")
public class BaiduAccessTokenTask implements RoseTask {

	private static String getAccessTokenUrl = null;

	private static String accessToken = null;

	private Service service = new Service();

	private BaiduAiAccountBean bean = null;

	public BaiduAccessTokenTask() {
		try {
			BeanDAO dao = new BeanDAO(service);
			BeanSQL query = dao.getQuerySQL();
			query.setEntityClass(BaiduAiAccountBean.class);
			query.createSql("state", 1);
			bean = dao.get();
			if (bean == null) {
				return;
			}
			// 获取token地址
			String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
			getAccessTokenUrl = authHost
					// 1. grant_type为固定参数
					+ "grant_type=client_credentials"
					// 2. 官网获取的 API Key
					+ "&client_id=" + bean.getApiKey()
					// 3. 官网获取的 Secret Key
					+ "&client_secret=" + bean.getSecretKey();
			this.excute();
		} catch (Exception e) {
			throw new RoseRuntimeException(e);
		} finally {
			service.close();
		}
	}

	@Override
	public void excute() {
		try {
			if (bean == null) {
				return;
			}
			URL realUrl = new URL(getAccessTokenUrl);
			// 打开和URL之间的连接
			HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
			connection.setRequestMethod("GET");
			connection.connect();
			// 获取所有响应头字段
			Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
			for (String key : map.keySet()) {
				System.err.println(key + "--->" + map.get(key));
			}
			// 定义 BufferedReader输入流来读取URL的响应
			BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String result = "";
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
			/**
			 * 返回结果示例
			 */
			System.err.println("result:" + result);
			JSONObject jsonObject = new JSONObject(result);
			accessToken = jsonObject.getString("access_token");
		} catch (Exception e) {
			throw new RoseRuntimeException(e);
		}
	}

	public static String getAccessToken() {
		return accessToken;
	}

}